<template>
    <div class="app-container">
        <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch"
                 label-width="68px">
            <el-form-item label="分类状态" prop="status">
                <el-select v-model="queryParams.status" placeholder="请选择分类状态" clearable>
                    <el-option
                        v-for="dict in dict.type.sys_yes_no"
                        :key="dict.value"
                        :label="dict.label"
                        :value="dict.value"
                    />
                </el-select>
            </el-form-item>
            <el-form-item>
                <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
                <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
            </el-form-item>
        </el-form>

        <el-row :gutter="10" class="mb8">
            <el-col :span="1.5">
                <el-button
                    type="primary"
                    plain
                    icon="el-icon-plus"
                    size="mini"
                    @click="handleAdd"
                    v-hasPermi="['hmy:categories:add']"
                >新增
                </el-button>
            </el-col>
            <el-col :span="1.5">
                <el-button
                    type="info"
                    plain
                    icon="el-icon-sort"
                    size="mini"
                    @click="toggleExpandAll"
                >展开/折叠
                </el-button>
            </el-col>
            <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
        </el-row>

        <el-table
            v-if="refreshTable"
            v-loading="loading"
            :data="categoriesList"
            row-key="id"
            :default-expand-all="isExpandAll"
            :tree-props="{children: 'children', hasChildren: 'hasChildren'}"
        >
            <el-table-column label="名称" prop="name"/>
            <el-table-column label="层级" align="center" prop="level"/>
            <el-table-column label="图片" align="center" prop="imageUrl"/>
            <el-table-column label="数量" align="center" prop="count"/>
            <el-table-column label="父Id" align="center" prop="pid"/>
            <el-table-column label="显示顺序" align="center" prop="orderNum"/>
            <el-table-column label="祖级列表" align="center" prop="ancestors"/>
            <el-table-column label="分类状态" align="center" prop="status">
                <template slot-scope="scope">
                    <dict-tag :options="dict.type.sys_yes_no" :value="scope.row.status"/>
                </template>
            </el-table-column>
            <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
                <template slot-scope="scope">
                    <el-button
                        size="mini"
                        type="text"
                        icon="el-icon-edit"
                        @click="handleUpdate(scope.row)"
                        v-hasPermi="['hmy:categories:edit']"
                    >修改
                    </el-button>
                    <el-button
                        size="mini"
                        type="text"
                        icon="el-icon-plus"
                        @click="handleAdd(scope.row)"
                        v-hasPermi="['hmy:categories:add']"
                    >新增
                    </el-button>
                    <el-button
                        size="mini"
                        type="text"
                        icon="el-icon-delete"
                        @click="handleDelete(scope.row)"
                        v-hasPermi="['hmy:categories:remove']"
                    >删除
                    </el-button>
                </template>
            </el-table-column>
        </el-table>

        <!-- 添加或修改店铺分类对话框 -->
        <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
            <el-form ref="form" :model="form" :rules="rules" label-width="80px">
                <el-form-item label="名称" prop="name">
                    <el-input v-model="form.name" placeholder="请输入名称"/>
                </el-form-item>
                <el-form-item label="层级" prop="level">
                    <el-input-number v-model="form.level" :min="0" :max="10" placeholder="请输入层级"/>
                </el-form-item>
                <el-form-item label="图片" prop="imageUrl">
                    <image-upload v-model="form.imageUrl" limit="1"/>
                </el-form-item>
                <el-form-item label="数量" prop="count">
                    <el-input v-model="form.count" placeholder="请输入数量"/>
                </el-form-item>
                <el-form-item label="父Id" prop="pid">
                    <treeselect v-model="form.pid" :options="categoriesOptions" :normalizer="normalizer"
                                placeholder="请选择父Id"/>
                </el-form-item>
                <el-form-item label="显示顺序" prop="orderNum">
                    <el-input-number v-model="form.orderNum" :min="0" :max="100" placeholder="请输入显示顺序"/>
                </el-form-item>
                <el-form-item label="分类状态" prop="status">
                    <el-select v-model="form.status" placeholder="请选择分类状态">
                        <el-option
                            v-for="dict in dict.type.sys_yes_no"
                            :key="dict.value"
                            :label="dict.label"
                            :value="dict.value"
                        ></el-option>
                    </el-select>
                </el-form-item>
                <el-form-item label="删除标识" prop="delFlag">
                    <el-select v-model="form.delFlag" placeholder="请选择删除标识">
                        <el-option
                            v-for="dict in dict.type.sys_yes_no"
                            :key="dict.value"
                            :label="dict.label"
                            :value="dict.value"
                        ></el-option>
                    </el-select>
                </el-form-item>
            </el-form>
            <div slot="footer" class="dialog-footer">
                <el-button type="primary" @click="submitForm">确 定</el-button>
                <el-button @click="cancel">取 消</el-button>
            </div>
        </el-dialog>
    </div>
</template>

<script>
import {listCategories, getCategories, delCategories, addCategories, updateCategories} from "@/api/hmy/categories";
import Treeselect from "@riophae/vue-treeselect";
import "@riophae/vue-treeselect/dist/vue-treeselect.css";

export default {
    name: "Categories",
    dicts: ['sys_yes_no'],
    components: {
        Treeselect
    },
    data() {
        return {
            // 遮罩层
            loading: true,
            // 显示搜索条件
            showSearch: true,
            // 店铺分类表格数据
            categoriesList: [],
            // 店铺分类树选项
            categoriesOptions: [],
            // 弹出层标题
            title: "",
            // 是否显示弹出层
            open: false,
            // 是否展开，默认全部展开
            isExpandAll: true,
            // 重新渲染表格状态
            refreshTable: true,
            // 查询参数
            queryParams: {
                name: null,
                status: null,
            },
            // 表单参数
            form: {},
            // 表单校验
            rules: {
                name: [
                    {required: true, message: "名称不能为空", trigger: "blur"}
                ],
            }
        };
    },
    created() {
        this.getList();
    },
    methods: {
        /** 查询店铺分类列表 */
        getList() {
            this.loading = true;
            listCategories(this.queryParams).then(response => {
                this.categoriesList = this.handleTree(response.data, "id", "pid");
                this.loading = false;
            });
        },
        /** 转换店铺分类数据结构 */
        normalizer(node) {
            if (node.children && !node.children.length) {
                delete node.children;
            }
            return {
                id: node.id,
                label: node.name,
                children: node.children
            };
        },
        /** 查询店铺分类下拉树结构 */
        getTreeselect() {
            listCategories().then(response => {
                this.categoriesOptions = [];
                const data = {id: 0, name: '顶级节点', children: []};
                data.children = this.handleTree(response.data, "id", "pid");
                this.categoriesOptions.push(data);
            });
        },
        // 取消按钮
        cancel() {
            this.open = false;
            this.reset();
        },
        // 表单重置
        reset() {
            this.form = {
                id: null,
                name: null,
                level: null,
                imageUrl: null,
                count: null,
                pid: null,
                orderNum: null,
                ancestors: null,
                status: null,
                delFlag: null,
                createBy: null,
                createTime: null,
                updateBy: null,
                updateTime: null
            };
            this.resetForm("form");
        },
        /** 搜索按钮操作 */
        handleQuery() {
            this.getList();
        },
        /** 重置按钮操作 */
        resetQuery() {
            this.resetForm("queryForm");
            this.handleQuery();
        },
        /** 新增按钮操作 */
        handleAdd(row) {
            this.reset();
            this.getTreeselect();
            if (row != null && row.id) {
                this.form.pid = row.id;
            } else {
                this.form.pid = 0;
            }
            this.open = true;
            this.title = "添加店铺分类";
        },
        /** 展开/折叠操作 */
        toggleExpandAll() {
            this.refreshTable = false;
            this.isExpandAll = !this.isExpandAll;
            this.$nextTick(() => {
                this.refreshTable = true;
            });
        },
        /** 修改按钮操作 */
        handleUpdate(row) {
            this.reset();
            this.getTreeselect();
            if (row != null) {
                this.form.pid = row.id;
            }
            getCategories(row.id).then(response => {
                this.form = response.data;
                this.open = true;
                this.title = "修改店铺分类";
            });
        },
        /** 提交按钮 */
        submitForm() {
            this.$refs["form"].validate(valid => {
                if (valid) {
                    if (this.form.id != null) {
                        updateCategories(this.form).then(response => {
                            this.$modal.msgSuccess("修改成功");
                            this.open = false;
                            this.getList();
                        });
                    } else {
                        addCategories(this.form).then(response => {
                            this.$modal.msgSuccess("新增成功");
                            this.open = false;
                            this.getList();
                        });
                    }
                }
            });
        },
        /** 删除按钮操作 */
        handleDelete(row) {
            this.$modal.confirm('是否确认删除店铺分类编号为"' + row.id + '"的数据项？').then(function () {
                return delCategories(row.id);
            }).then(() => {
                this.getList();
                this.$modal.msgSuccess("删除成功");
            }).catch(() => {
            });
        }
    }
};
</script>
